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CVE-2026-88832

📛 CVE Title

Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow

Description

BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.

Overview

State
PUBLISHED
Assigner (CNA)
redhat
CVSS severity
HIGH
CVSS score
CVSS 7.3 / 10 7.3 7.3 / 10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Effective score
7.3 / 10 HIGH source: CNA overview
CWE(s)
CWE-787
Reserved
2026-09-10
Published
2026-09-23 17:05 UTC
Last updated
2026-09-24 03:55 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/88xxx/CVE-2026-88832.json
Linked Threat
CVE-2026-88832 — Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow

NVD / KEV / EPSS data refreshed 2026-09-24 04:32 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID
EUVD-2026-85426
Assigner
redhat
Published
Sep 23, 2026, 5:05:00 PM
Updated
Sep 24, 2026, 3:55:44 AM
EUVD base score (CVSS 3.1)
7.3 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EUVD-reported EPSS
0.0000
Aliases
GHSA-hqw2-f49w-7w56

ENISA description: BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.

EUVD references (2)

Affected products (1)

VendorProductVersionsPlatforms
Red Hat Red Hat Hardened Images

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-88832.json.

{
  "containers": {
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        "metrics": [
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                "id": "CVE-2026-88832",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-24T03:55:44.024Z",
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        },
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    ],
    "cna": {
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          "cpes": [
            "cpe:/a:redhat:hummingbird:1"
          ],
          "defaultStatus": "affected",
          "packageName": "busybox",
          "product": "Red Hat Hardened Images",
          "vendor": "Red Hat"
        }
      ],
      "datePublic": "2026-09-23T16:35:00.000Z",
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Important"
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            "type": "Red Hat severity rating"
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        },
        {
          "cvssV3_1": {
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
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      "problemTypes": [
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              "description": "Out-of-bounds Write",
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-23T17:05:00.787Z",
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      "references": [
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          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-88832"
        },
        {
          "name": "RHBZ#2531345",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531345"
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      "timeline": [
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          "time": "2026-09-09T00:00:00.000Z",
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          "value": "Made public."
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      ],
      "title": "Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow",
      "workarounds": [
        {
          "lang": "en",
          "value": "Avoid processing untrusted filesystem images with BusyBox blkid or findfs. Use the util-linux versions of these utilities instead (default on Fedora)."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-787: Out-of-bounds Write"
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  },
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    "dateReserved": "2026-09-10T09:42:04.559Z",
    "dateUpdated": "2026-09-24T03:55:44.024Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}